Patents by Inventor Kalyana C. Vullaganti

Kalyana C. Vullaganti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Variable impedance sense architecture and method
    Patent number: 8036846
    Abstract: A variable impedance sense (VIS) circuit (400) can detect a drift in the impedance of variable impedance circuits due to changes in operating conditions. Adjustments to binary impedance setting codes are made in response to a detected drift only when such changes do not increase a worst case variation from a target impedance. Adjustments can also be made in response to a detected input offset polarity.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: October 11, 2011
    Assignee: Cypress Semiconductor Corporation
    Inventor: Kalyana C. Vullaganti
  • Variable impedance sense architecture and method
    Patent number: 7479800
    Abstract: A variable impedance sense (VIS) circuit (600) can detect and store an input offset value inherent in a sensing loop (620 and/or 622). According to a detected input offset polarity, a resulting impedance matching binary code can be adjusted to compensate for error that can be introduced by the input offset. The binary code can also be adjusted to compensate for additional error that can be introduced by dropping a least significant bit (LSB) of the code to reduce noise effects caused by the switching of the LSB.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: January 20, 2009
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kalyana C. Vullaganti, Jeffery Scott Hunt